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1da177e4 LT |
1 | /*+M************************************************************************* |
2 | * Perceptive Solutions, Inc. PSI-240I device driver proc support for Linux. | |
3 | * | |
4 | * Copyright (c) 1997 Perceptive Solutions, Inc. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2, or (at your option) | |
9 | * any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; see the file COPYING. If not, write to | |
18 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
19 | * | |
20 | * | |
21 | * File Name: psi240i.c | |
22 | * | |
23 | * Description: SCSI driver for the PSI240I EIDE interface card. | |
24 | * | |
25 | *-M*************************************************************************/ | |
26 | ||
27 | #include <linux/module.h> | |
28 | ||
29 | #include <linux/blkdev.h> | |
30 | #include <linux/kernel.h> | |
31 | #include <linux/types.h> | |
32 | #include <linux/string.h> | |
33 | #include <linux/ioport.h> | |
34 | #include <linux/delay.h> | |
35 | #include <linux/interrupt.h> | |
36 | #include <linux/proc_fs.h> | |
37 | #include <linux/spinlock.h> | |
38 | #include <linux/stat.h> | |
39 | ||
40 | #include <asm/dma.h> | |
41 | #include <asm/system.h> | |
42 | #include <asm/io.h> | |
43 | #include "scsi.h" | |
44 | #include <scsi/scsi_host.h> | |
45 | ||
46 | #include "psi240i.h" | |
47 | #include "psi_chip.h" | |
48 | ||
49 | //#define DEBUG 1 | |
50 | ||
51 | #ifdef DEBUG | |
52 | #define DEB(x) x | |
53 | #else | |
54 | #define DEB(x) | |
55 | #endif | |
56 | ||
57 | #define MAXBOARDS 6 /* Increase this and the sizes of the arrays below, if you need more. */ | |
58 | ||
59 | #define PORT_DATA 0 | |
60 | #define PORT_ERROR 1 | |
61 | #define PORT_SECTOR_COUNT 2 | |
62 | #define PORT_LBA_0 3 | |
63 | #define PORT_LBA_8 4 | |
64 | #define PORT_LBA_16 5 | |
65 | #define PORT_LBA_24 6 | |
66 | #define PORT_STAT_CMD 7 | |
67 | #define PORT_SEL_FAIL 8 | |
68 | #define PORT_IRQ_STATUS 9 | |
69 | #define PORT_ADDRESS 10 | |
70 | #define PORT_FAIL 11 | |
71 | #define PORT_ALT_STAT 12 | |
72 | ||
73 | typedef struct | |
74 | { | |
75 | UCHAR device; // device code | |
76 | UCHAR byte6; // device select register image | |
77 | UCHAR spigot; // spigot number | |
78 | UCHAR expectingIRQ; // flag for expecting and interrupt | |
79 | USHORT sectors; // number of sectors per track | |
80 | USHORT heads; // number of heads | |
81 | USHORT cylinders; // number of cylinders for this device | |
82 | USHORT spareword; // placeholder | |
83 | ULONG blocks; // number of blocks on device | |
84 | } OUR_DEVICE, *POUR_DEVICE; | |
85 | ||
86 | typedef struct | |
87 | { | |
88 | USHORT ports[13]; | |
89 | OUR_DEVICE device[8]; | |
90 | Scsi_Cmnd *pSCmnd; | |
91 | IDE_STRUCT ide; | |
92 | ULONG startSector; | |
93 | USHORT sectorCount; | |
94 | Scsi_Cmnd *SCpnt; | |
95 | VOID *buffer; | |
96 | USHORT expectingIRQ; | |
97 | } ADAPTER240I, *PADAPTER240I; | |
98 | ||
99 | #define HOSTDATA(host) ((PADAPTER240I)&host->hostdata) | |
100 | ||
101 | static struct Scsi_Host *PsiHost[6] = {NULL,}; /* One for each IRQ level (10-15) */ | |
102 | static IDENTIFY_DATA identifyData; | |
103 | static SETUP ChipSetup; | |
104 | ||
105 | static USHORT portAddr[6] = {CHIP_ADRS_0, CHIP_ADRS_1, CHIP_ADRS_2, CHIP_ADRS_3, CHIP_ADRS_4, CHIP_ADRS_5}; | |
106 | ||
107 | /**************************************************************** | |
108 | * Name: WriteData :LOCAL | |
109 | * | |
110 | * Description: Write data to device. | |
111 | * | |
112 | * Parameters: padapter - Pointer adapter data structure. | |
113 | * | |
114 | * Returns: TRUE if drive does not assert DRQ in time. | |
115 | * | |
116 | ****************************************************************/ | |
117 | static int WriteData (PADAPTER240I padapter) | |
118 | { | |
119 | ULONG timer; | |
120 | USHORT *pports = padapter->ports; | |
121 | ||
122 | timer = jiffies + TIMEOUT_DRQ; // calculate the timeout value | |
123 | do { | |
124 | if ( inb_p (pports[PORT_STAT_CMD]) & IDE_STATUS_DRQ ) | |
125 | { | |
126 | outsw (pports[PORT_DATA], padapter->buffer, (USHORT)padapter->ide.ide.ide[2] * 256); | |
127 | return 0; | |
128 | } | |
129 | } while ( time_after(timer, jiffies) ); // test for timeout | |
130 | ||
131 | padapter->ide.ide.ides.cmd = 0; // null out the command byte | |
132 | return 1; | |
133 | } | |
134 | /**************************************************************** | |
135 | * Name: IdeCmd :LOCAL | |
136 | * | |
137 | * Description: Process a queued command from the SCSI manager. | |
138 | * | |
139 | * Parameters: padapter - Pointer adapter data structure. | |
140 | * | |
141 | * Returns: Zero if no error or status register contents on error. | |
142 | * | |
143 | ****************************************************************/ | |
144 | static UCHAR IdeCmd (PADAPTER240I padapter) | |
145 | { | |
146 | ULONG timer; | |
147 | USHORT *pports = padapter->ports; | |
148 | UCHAR status; | |
149 | ||
150 | outb_p (padapter->ide.ide.ides.spigot, pports[PORT_SEL_FAIL]); // select the spigot | |
151 | outb_p (padapter->ide.ide.ide[6], pports[PORT_LBA_24]); // select the drive | |
152 | timer = jiffies + TIMEOUT_READY; // calculate the timeout value | |
153 | do { | |
154 | status = inb_p (padapter->ports[PORT_STAT_CMD]); | |
155 | if ( status & IDE_STATUS_DRDY ) | |
156 | { | |
157 | outb_p (padapter->ide.ide.ide[2], pports[PORT_SECTOR_COUNT]); | |
158 | outb_p (padapter->ide.ide.ide[3], pports[PORT_LBA_0]); | |
159 | outb_p (padapter->ide.ide.ide[4], pports[PORT_LBA_8]); | |
160 | outb_p (padapter->ide.ide.ide[5], pports[PORT_LBA_16]); | |
161 | padapter->expectingIRQ = 1; | |
162 | outb_p (padapter->ide.ide.ide[7], pports[PORT_STAT_CMD]); | |
163 | ||
164 | if ( padapter->ide.ide.ides.cmd == IDE_CMD_WRITE_MULTIPLE ) | |
165 | return (WriteData (padapter)); | |
166 | ||
167 | return 0; | |
168 | } | |
169 | } while ( time_after(timer, jiffies) ); // test for timeout | |
170 | ||
171 | padapter->ide.ide.ides.cmd = 0; // null out the command byte | |
172 | return status; | |
173 | } | |
174 | /**************************************************************** | |
175 | * Name: SetupTransfer :LOCAL | |
176 | * | |
177 | * Description: Setup a data transfer command. | |
178 | * | |
179 | * Parameters: padapter - Pointer adapter data structure. | |
180 | * drive - Drive/head register upper nibble only. | |
181 | * | |
182 | * Returns: TRUE if no data to transfer. | |
183 | * | |
184 | ****************************************************************/ | |
185 | static int SetupTransfer (PADAPTER240I padapter, UCHAR drive) | |
186 | { | |
187 | if ( padapter->sectorCount ) | |
188 | { | |
189 | *(ULONG *)padapter->ide.ide.ides.lba = padapter->startSector; | |
190 | padapter->ide.ide.ide[6] |= drive; | |
191 | padapter->ide.ide.ides.sectors = ( padapter->sectorCount > SECTORSXFER ) ? SECTORSXFER : padapter->sectorCount; | |
192 | padapter->sectorCount -= padapter->ide.ide.ides.sectors; // bump the start and count for next xfer | |
193 | padapter->startSector += padapter->ide.ide.ides.sectors; | |
194 | return 0; | |
195 | } | |
196 | else | |
197 | { | |
198 | padapter->ide.ide.ides.cmd = 0; // null out the command byte | |
199 | padapter->SCpnt = NULL; | |
200 | return 1; | |
201 | } | |
202 | } | |
203 | /**************************************************************** | |
204 | * Name: DecodeError :LOCAL | |
205 | * | |
206 | * Description: Decode and process device errors. | |
207 | * | |
208 | * Parameters: pshost - Pointer to host data block. | |
209 | * status - Status register code. | |
210 | * | |
211 | * Returns: The driver status code. | |
212 | * | |
213 | ****************************************************************/ | |
214 | static ULONG DecodeError (struct Scsi_Host *pshost, UCHAR status) | |
215 | { | |
216 | PADAPTER240I padapter = HOSTDATA(pshost); | |
217 | UCHAR error; | |
218 | ||
219 | padapter->expectingIRQ = 0; | |
220 | padapter->SCpnt = NULL; | |
221 | if ( status & IDE_STATUS_WRITE_FAULT ) | |
222 | { | |
223 | return DID_PARITY << 16; | |
224 | } | |
225 | if ( status & IDE_STATUS_BUSY ) | |
226 | return DID_BUS_BUSY << 16; | |
227 | ||
228 | error = inb_p (padapter->ports[PORT_ERROR]); | |
229 | DEB(printk ("\npsi240i error register: %x", error)); | |
230 | switch ( error ) | |
231 | { | |
232 | case IDE_ERROR_AMNF: | |
233 | case IDE_ERROR_TKONF: | |
234 | case IDE_ERROR_ABRT: | |
235 | case IDE_ERROR_IDFN: | |
236 | case IDE_ERROR_UNC: | |
237 | case IDE_ERROR_BBK: | |
238 | default: | |
239 | return DID_ERROR << 16; | |
240 | } | |
241 | return DID_ERROR << 16; | |
242 | } | |
243 | /**************************************************************** | |
244 | * Name: Irq_Handler :LOCAL | |
245 | * | |
246 | * Description: Interrupt handler. | |
247 | * | |
248 | * Parameters: irq - Hardware IRQ number. | |
249 | * dev_id - | |
1da177e4 LT |
250 | * |
251 | * Returns: TRUE if drive is not ready in time. | |
252 | * | |
253 | ****************************************************************/ | |
7d12e780 | 254 | static void Irq_Handler (int irq, void *dev_id) |
1da177e4 LT |
255 | { |
256 | struct Scsi_Host *shost; // Pointer to host data block | |
257 | PADAPTER240I padapter; // Pointer to adapter control structure | |
258 | USHORT *pports; // I/O port array | |
259 | Scsi_Cmnd *SCpnt; | |
260 | UCHAR status; | |
261 | int z; | |
262 | ||
263 | DEB(printk ("\npsi240i received interrupt\n")); | |
264 | ||
265 | shost = PsiHost[irq - 10]; | |
266 | if ( !shost ) | |
267 | panic ("Splunge!"); | |
268 | ||
269 | padapter = HOSTDATA(shost); | |
270 | pports = padapter->ports; | |
271 | SCpnt = padapter->SCpnt; | |
272 | ||
273 | if ( !padapter->expectingIRQ ) | |
274 | { | |
275 | DEB(printk ("\npsi240i Unsolicited interrupt\n")); | |
276 | return; | |
277 | } | |
278 | padapter->expectingIRQ = 0; | |
279 | ||
280 | status = inb_p (padapter->ports[PORT_STAT_CMD]); // read the device status | |
281 | if ( status & (IDE_STATUS_ERROR | IDE_STATUS_WRITE_FAULT) ) | |
282 | goto irqerror; | |
283 | ||
284 | DEB(printk ("\npsi240i processing interrupt")); | |
285 | switch ( padapter->ide.ide.ides.cmd ) // decide how to handle the interrupt | |
286 | { | |
287 | case IDE_CMD_READ_MULTIPLE: | |
288 | if ( status & IDE_STATUS_DRQ ) | |
289 | { | |
290 | insw (pports[PORT_DATA], padapter->buffer, (USHORT)padapter->ide.ide.ides.sectors * 256); | |
291 | padapter->buffer += padapter->ide.ide.ides.sectors * 512; | |
292 | if ( SetupTransfer (padapter, padapter->ide.ide.ide[6] & 0xF0) ) | |
293 | { | |
294 | SCpnt->result = DID_OK << 16; | |
295 | padapter->SCpnt = NULL; | |
296 | SCpnt->scsi_done (SCpnt); | |
297 | return; | |
298 | } | |
299 | if ( !(status = IdeCmd (padapter)) ) | |
300 | return; | |
301 | } | |
302 | break; | |
303 | ||
304 | case IDE_CMD_WRITE_MULTIPLE: | |
305 | padapter->buffer += padapter->ide.ide.ides.sectors * 512; | |
306 | if ( SetupTransfer (padapter, padapter->ide.ide.ide[6] & 0xF0) ) | |
307 | { | |
308 | SCpnt->result = DID_OK << 16; | |
309 | padapter->SCpnt = NULL; | |
310 | SCpnt->scsi_done (SCpnt); | |
311 | return; | |
312 | } | |
313 | if ( !(status = IdeCmd (padapter)) ) | |
314 | return; | |
315 | break; | |
316 | ||
317 | case IDE_COMMAND_IDENTIFY: | |
318 | { | |
319 | PINQUIRYDATA pinquiryData = SCpnt->request_buffer; | |
320 | ||
321 | if ( status & IDE_STATUS_DRQ ) | |
322 | { | |
323 | insw (pports[PORT_DATA], &identifyData, sizeof (identifyData) >> 1); | |
324 | ||
325 | memset (pinquiryData, 0, SCpnt->request_bufflen); // Zero INQUIRY data structure. | |
326 | pinquiryData->DeviceType = 0; | |
327 | pinquiryData->Versions = 2; | |
328 | pinquiryData->AdditionalLength = 35 - 4; | |
329 | ||
330 | // Fill in vendor identification fields. | |
331 | for ( z = 0; z < 20; z += 2 ) | |
332 | { | |
333 | pinquiryData->VendorId[z] = ((UCHAR *)identifyData.ModelNumber)[z + 1]; | |
334 | pinquiryData->VendorId[z + 1] = ((UCHAR *)identifyData.ModelNumber)[z]; | |
335 | } | |
336 | ||
337 | // Initialize unused portion of product id. | |
338 | for ( z = 0; z < 4; z++ ) | |
339 | pinquiryData->ProductId[12 + z] = ' '; | |
340 | ||
341 | // Move firmware revision from IDENTIFY data to | |
342 | // product revision in INQUIRY data. | |
343 | for ( z = 0; z < 4; z += 2 ) | |
344 | { | |
345 | pinquiryData->ProductRevisionLevel[z] = ((UCHAR *)identifyData.FirmwareRevision)[z + 1]; | |
346 | pinquiryData->ProductRevisionLevel[z + 1] = ((UCHAR *)identifyData.FirmwareRevision)[z]; | |
347 | } | |
348 | ||
349 | SCpnt->result = DID_OK << 16; | |
350 | padapter->SCpnt = NULL; | |
351 | SCpnt->scsi_done (SCpnt); | |
352 | return; | |
353 | } | |
354 | break; | |
355 | } | |
356 | ||
357 | default: | |
358 | SCpnt->result = DID_OK << 16; | |
359 | padapter->SCpnt = NULL; | |
360 | SCpnt->scsi_done (SCpnt); | |
361 | return; | |
362 | } | |
363 | ||
364 | irqerror:; | |
365 | DEB(printk ("\npsi240i error Device Status: %X\n", status)); | |
366 | SCpnt->result = DecodeError (shost, status); | |
367 | SCpnt->scsi_done (SCpnt); | |
368 | } | |
369 | ||
7d12e780 | 370 | static irqreturn_t do_Irq_Handler (int irq, void *dev_id) |
1da177e4 LT |
371 | { |
372 | unsigned long flags; | |
373 | struct Scsi_Host *dev = dev_id; | |
374 | ||
375 | spin_lock_irqsave(dev->host_lock, flags); | |
7d12e780 | 376 | Irq_Handler(irq, dev_id); |
1da177e4 LT |
377 | spin_unlock_irqrestore(dev->host_lock, flags); |
378 | return IRQ_HANDLED; | |
379 | } | |
380 | ||
381 | /**************************************************************** | |
382 | * Name: Psi240i_QueueCommand | |
383 | * | |
384 | * Description: Process a queued command from the SCSI manager. | |
385 | * | |
386 | * Parameters: SCpnt - Pointer to SCSI command structure. | |
387 | * done - Pointer to done function to call. | |
388 | * | |
389 | * Returns: Status code. | |
390 | * | |
391 | ****************************************************************/ | |
392 | static int Psi240i_QueueCommand (Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *)) | |
393 | { | |
394 | UCHAR *cdb = (UCHAR *)SCpnt->cmnd; // Pointer to SCSI CDB | |
395 | PADAPTER240I padapter = HOSTDATA (SCpnt->device->host); // Pointer to adapter control structure | |
396 | POUR_DEVICE pdev = &padapter->device [SCpnt->device->id];// Pointer to device information | |
397 | UCHAR rc; // command return code | |
398 | ||
399 | SCpnt->scsi_done = done; | |
400 | padapter->ide.ide.ides.spigot = pdev->spigot; | |
401 | padapter->buffer = SCpnt->request_buffer; | |
402 | if (done) | |
403 | { | |
404 | if ( !pdev->device ) | |
405 | { | |
406 | SCpnt->result = DID_BAD_TARGET << 16; | |
407 | done (SCpnt); | |
408 | return 0; | |
409 | } | |
410 | } | |
411 | else | |
412 | { | |
413 | printk("psi240i_queuecommand: %02X: done can't be NULL\n", *cdb); | |
414 | return 0; | |
415 | } | |
416 | ||
417 | switch ( *cdb ) | |
418 | { | |
419 | case SCSIOP_INQUIRY: // inquiry CDB | |
420 | { | |
421 | padapter->ide.ide.ide[6] = pdev->byte6; | |
422 | padapter->ide.ide.ides.cmd = IDE_COMMAND_IDENTIFY; | |
423 | break; | |
424 | } | |
425 | ||
426 | case SCSIOP_TEST_UNIT_READY: // test unit ready CDB | |
427 | SCpnt->result = DID_OK << 16; | |
428 | done (SCpnt); | |
429 | return 0; | |
430 | ||
431 | case SCSIOP_READ_CAPACITY: // read capctiy CDB | |
432 | { | |
433 | PREAD_CAPACITY_DATA pdata = (PREAD_CAPACITY_DATA)SCpnt->request_buffer; | |
434 | ||
435 | pdata->blksiz = 0x20000; | |
436 | XANY2SCSI ((UCHAR *)&pdata->blks, pdev->blocks); | |
437 | SCpnt->result = DID_OK << 16; | |
438 | done (SCpnt); | |
439 | return 0; | |
440 | } | |
441 | ||
442 | case SCSIOP_VERIFY: // verify CDB | |
443 | *(ULONG *)padapter->ide.ide.ides.lba = XSCSI2LONG (&cdb[2]); | |
444 | padapter->ide.ide.ide[6] |= pdev->byte6; | |
445 | padapter->ide.ide.ide[2] = (UCHAR)((USHORT)cdb[8] | ((USHORT)cdb[7] << 8)); | |
446 | padapter->ide.ide.ides.cmd = IDE_COMMAND_VERIFY; | |
447 | break; | |
448 | ||
449 | case SCSIOP_READ: // read10 CDB | |
450 | padapter->startSector = XSCSI2LONG (&cdb[2]); | |
451 | padapter->sectorCount = (USHORT)cdb[8] | ((USHORT)cdb[7] << 8); | |
452 | SetupTransfer (padapter, pdev->byte6); | |
453 | padapter->ide.ide.ides.cmd = IDE_CMD_READ_MULTIPLE; | |
454 | break; | |
455 | ||
456 | case SCSIOP_READ6: // read6 CDB | |
457 | padapter->startSector = SCSI2LONG (&cdb[1]); | |
458 | padapter->sectorCount = cdb[4]; | |
459 | SetupTransfer (padapter, pdev->byte6); | |
460 | padapter->ide.ide.ides.cmd = IDE_CMD_READ_MULTIPLE; | |
461 | break; | |
462 | ||
463 | case SCSIOP_WRITE: // write10 CDB | |
464 | padapter->startSector = XSCSI2LONG (&cdb[2]); | |
465 | padapter->sectorCount = (USHORT)cdb[8] | ((USHORT)cdb[7] << 8); | |
466 | SetupTransfer (padapter, pdev->byte6); | |
467 | padapter->ide.ide.ides.cmd = IDE_CMD_WRITE_MULTIPLE; | |
468 | break; | |
469 | case SCSIOP_WRITE6: // write6 CDB | |
470 | padapter->startSector = SCSI2LONG (&cdb[1]); | |
471 | padapter->sectorCount = cdb[4]; | |
472 | SetupTransfer (padapter, pdev->byte6); | |
473 | padapter->ide.ide.ides.cmd = IDE_CMD_WRITE_MULTIPLE; | |
474 | break; | |
475 | ||
476 | default: | |
477 | DEB (printk ("psi240i_queuecommand: Unsupported command %02X\n", *cdb)); | |
478 | SCpnt->result = DID_ERROR << 16; | |
479 | done (SCpnt); | |
480 | return 0; | |
481 | } | |
482 | ||
483 | padapter->SCpnt = SCpnt; // Save this command data | |
484 | ||
485 | rc = IdeCmd (padapter); | |
486 | if ( rc ) | |
487 | { | |
488 | padapter->expectingIRQ = 0; | |
489 | DEB (printk ("psi240i_queuecommand: %02X, %02X: Device failed to respond for command\n", *cdb, padapter->ide.ide.ides.cmd)); | |
490 | SCpnt->result = DID_ERROR << 16; | |
491 | done (SCpnt); | |
492 | return 0; | |
493 | } | |
494 | DEB (printk("psi240i_queuecommand: %02X, %02X now waiting for interrupt ", *cdb, padapter->ide.ide.ides.cmd)); | |
495 | return 0; | |
496 | } | |
497 | ||
498 | /*************************************************************************** | |
499 | * Name: ReadChipMemory | |
500 | * | |
501 | * Description: Read information from controller memory. | |
502 | * | |
503 | * Parameters: psetup - Pointer to memory image of setup information. | |
504 | * base - base address of memory. | |
505 | * length - lenght of data space in bytes. | |
506 | * port - I/O address of data port. | |
507 | * | |
508 | * Returns: Nothing. | |
509 | * | |
510 | **************************************************************************/ | |
511 | static void ReadChipMemory (void *pdata, USHORT base, USHORT length, USHORT port) | |
512 | { | |
513 | USHORT z, zz; | |
514 | UCHAR *pd = (UCHAR *)pdata; | |
515 | outb_p (SEL_NONE, port + REG_SEL_FAIL); // setup data port | |
516 | zz = 0; | |
517 | while ( zz < length ) | |
518 | { | |
519 | outw_p (base, port + REG_ADDRESS); // setup address | |
520 | ||
521 | for ( z = 0; z < 8; z++ ) | |
522 | { | |
523 | if ( (zz + z) < length ) | |
524 | *pd++ = inb_p (port + z); // read data byte | |
525 | } | |
526 | zz += 8; | |
527 | base += 8; | |
528 | } | |
529 | } | |
530 | /**************************************************************** | |
531 | * Name: Psi240i_Detect | |
532 | * | |
533 | * Description: Detect and initialize our boards. | |
534 | * | |
535 | * Parameters: tpnt - Pointer to SCSI host template structure. | |
536 | * | |
537 | * Returns: Number of adapters found. | |
538 | * | |
539 | ****************************************************************/ | |
d0be4a7d | 540 | static int Psi240i_Detect (struct scsi_host_template *tpnt) |
1da177e4 LT |
541 | { |
542 | int board; | |
543 | int count = 0; | |
544 | int unit; | |
545 | int z; | |
546 | USHORT port, port_range = 16; | |
547 | CHIP_CONFIG_N chipConfig; | |
548 | CHIP_DEVICE_N chipDevice[8]; | |
549 | struct Scsi_Host *pshost; | |
550 | ||
551 | for ( board = 0; board < MAXBOARDS; board++ ) // scan for I/O ports | |
552 | { | |
553 | pshost = NULL; | |
554 | port = portAddr[board]; // get base address to test | |
555 | if ( !request_region (port, port_range, "psi240i") ) | |
556 | continue; | |
557 | if ( inb_p (port + REG_FAIL) != CHIP_ID ) // do the first test for likley hood that it is us | |
558 | goto host_init_failure; | |
559 | outb_p (SEL_NONE, port + REG_SEL_FAIL); // setup EEPROM/RAM access | |
560 | outw (0, port + REG_ADDRESS); // setup EEPROM address zero | |
561 | if ( inb_p (port) != 0x55 ) // test 1st byte | |
562 | goto host_init_failure; // nope | |
563 | if ( inb_p (port + 1) != 0xAA ) // test 2nd byte | |
564 | goto host_init_failure; // nope | |
565 | ||
566 | // at this point our board is found and can be accessed. Now we need to initialize | |
567 | // our informatation and register with the kernel. | |
568 | ||
569 | ||
570 | ReadChipMemory (&chipConfig, CHIP_CONFIG, sizeof (chipConfig), port); | |
571 | ReadChipMemory (&chipDevice, CHIP_DEVICE, sizeof (chipDevice), port); | |
572 | ReadChipMemory (&ChipSetup, CHIP_EEPROM_DATA, sizeof (ChipSetup), port); | |
573 | ||
574 | if ( !chipConfig.numDrives ) // if no devices on this board | |
575 | goto host_init_failure; | |
576 | ||
577 | pshost = scsi_register (tpnt, sizeof(ADAPTER240I)); | |
578 | if(pshost == NULL) | |
579 | goto host_init_failure; | |
580 | ||
581 | PsiHost[chipConfig.irq - 10] = pshost; | |
582 | pshost->unique_id = port; | |
583 | pshost->io_port = port; | |
584 | pshost->n_io_port = 16; /* Number of bytes of I/O space used */ | |
585 | pshost->irq = chipConfig.irq; | |
586 | ||
587 | for ( z = 0; z < 11; z++ ) // build regester address array | |
588 | HOSTDATA(pshost)->ports[z] = port + z; | |
589 | HOSTDATA(pshost)->ports[11] = port + REG_FAIL; | |
590 | HOSTDATA(pshost)->ports[12] = port + REG_ALT_STAT; | |
591 | DEB (printk ("\nPorts =")); | |
592 | DEB (for (z=0;z<13;z++) printk(" %#04X",HOSTDATA(pshost)->ports[z]);); | |
593 | ||
594 | for ( z = 0; z < chipConfig.numDrives; ++z ) | |
595 | { | |
596 | unit = chipDevice[z].channel & 0x0F; | |
597 | HOSTDATA(pshost)->device[unit].device = ChipSetup.setupDevice[unit].device; | |
598 | HOSTDATA(pshost)->device[unit].byte6 = (UCHAR)(((unit & 1) << 4) | 0xE0); | |
599 | HOSTDATA(pshost)->device[unit].spigot = (UCHAR)(1 << (unit >> 1)); | |
600 | HOSTDATA(pshost)->device[unit].sectors = ChipSetup.setupDevice[unit].sectors; | |
601 | HOSTDATA(pshost)->device[unit].heads = ChipSetup.setupDevice[unit].heads; | |
602 | HOSTDATA(pshost)->device[unit].cylinders = ChipSetup.setupDevice[unit].cylinders; | |
603 | HOSTDATA(pshost)->device[unit].blocks = ChipSetup.setupDevice[unit].blocks; | |
604 | DEB (printk ("\nHOSTDATA->device = %X", HOSTDATA(pshost)->device[unit].device)); | |
605 | DEB (printk ("\n byte6 = %X", HOSTDATA(pshost)->device[unit].byte6)); | |
606 | DEB (printk ("\n spigot = %X", HOSTDATA(pshost)->device[unit].spigot)); | |
607 | DEB (printk ("\n sectors = %X", HOSTDATA(pshost)->device[unit].sectors)); | |
608 | DEB (printk ("\n heads = %X", HOSTDATA(pshost)->device[unit].heads)); | |
609 | DEB (printk ("\n cylinders = %X", HOSTDATA(pshost)->device[unit].cylinders)); | |
610 | DEB (printk ("\n blocks = %lX", HOSTDATA(pshost)->device[unit].blocks)); | |
611 | } | |
612 | ||
613 | if ( request_irq (chipConfig.irq, do_Irq_Handler, 0, "psi240i", pshost) == 0 ) | |
614 | { | |
615 | printk("\nPSI-240I EIDE CONTROLLER: at I/O = %x IRQ = %d\n", port, chipConfig.irq); | |
616 | printk("(C) 1997 Perceptive Solutions, Inc. All rights reserved\n\n"); | |
617 | count++; | |
618 | continue; | |
619 | } | |
620 | ||
621 | printk ("Unable to allocate IRQ for PSI-240I controller.\n"); | |
622 | ||
623 | host_init_failure: | |
624 | ||
625 | release_region (port, port_range); | |
626 | if (pshost) | |
627 | scsi_unregister (pshost); | |
628 | ||
629 | } | |
630 | return count; | |
631 | } | |
632 | ||
633 | static int Psi240i_Release(struct Scsi_Host *shost) | |
634 | { | |
635 | if (shost->irq) | |
636 | free_irq(shost->irq, NULL); | |
637 | if (shost->io_port && shost->n_io_port) | |
638 | release_region(shost->io_port, shost->n_io_port); | |
639 | scsi_unregister(shost); | |
640 | return 0; | |
641 | } | |
642 | ||
643 | /**************************************************************** | |
644 | * Name: Psi240i_BiosParam | |
645 | * | |
646 | * Description: Process the biosparam request from the SCSI manager to | |
647 | * return C/H/S data. | |
648 | * | |
649 | * Parameters: disk - Pointer to SCSI disk structure. | |
650 | * dev - Major/minor number from kernel. | |
651 | * geom - Pointer to integer array to place geometry data. | |
652 | * | |
653 | * Returns: zero. | |
654 | * | |
655 | ****************************************************************/ | |
656 | static int Psi240i_BiosParam (struct scsi_device *sdev, struct block_device *dev, | |
657 | sector_t capacity, int geom[]) | |
658 | { | |
659 | POUR_DEVICE pdev; | |
660 | ||
422c0d61 | 661 | pdev = &(HOSTDATA(sdev->host)->device[sdev_id(sdev)]); |
1da177e4 LT |
662 | |
663 | geom[0] = pdev->heads; | |
664 | geom[1] = pdev->sectors; | |
665 | geom[2] = pdev->cylinders; | |
666 | return 0; | |
667 | } | |
668 | ||
669 | MODULE_LICENSE("GPL"); | |
670 | ||
d0be4a7d | 671 | static struct scsi_host_template driver_template = { |
1da177e4 LT |
672 | .proc_name = "psi240i", |
673 | .name = "PSI-240I EIDE Disk Controller", | |
674 | .detect = Psi240i_Detect, | |
675 | .release = Psi240i_Release, | |
676 | .queuecommand = Psi240i_QueueCommand, | |
677 | .bios_param = Psi240i_BiosParam, | |
678 | .can_queue = 1, | |
679 | .this_id = -1, | |
680 | .sg_tablesize = SG_NONE, | |
681 | .cmd_per_lun = 1, | |
682 | .use_clustering = DISABLE_CLUSTERING, | |
683 | }; | |
684 | #include "scsi_module.c" |